Properties

Label 200.2.f.b
Level $200$
Weight $2$
Character orbit 200.f
Analytic conductor $1.597$
Analytic rank $0$
Dimension $2$
CM no
Inner twists $2$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [200,2,Mod(149,200)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(200, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 1, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("200.149");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 200 = 2^{3} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 200.f (of order \(2\), degree \(1\), not minimal)

Newform invariants

comment: select newform
 
sage: f = N[0] # Warning: the index may be different
 
gp: f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(1.59700804043\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-1}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

Coefficients of the \(q\)-expansion are expressed in terms of \(i = \sqrt{-1}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (i + 1) q^{2} + q^{3} + 2 i q^{4} + (i + 1) q^{6} + 2 i q^{7} + (2 i - 2) q^{8} - 2 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + (i + 1) q^{2} + q^{3} + 2 i q^{4} + (i + 1) q^{6} + 2 i q^{7} + (2 i - 2) q^{8} - 2 q^{9} - 5 i q^{11} + 2 i q^{12} + 6 q^{13} + (2 i - 2) q^{14} - 4 q^{16} - 3 i q^{17} + ( - 2 i - 2) q^{18} - i q^{19} + 2 i q^{21} + ( - 5 i + 5) q^{22} + 4 i q^{23} + (2 i - 2) q^{24} + (6 i + 6) q^{26} - 5 q^{27} - 4 q^{28} - 6 i q^{29} - 8 q^{31} + ( - 4 i - 4) q^{32} - 5 i q^{33} + ( - 3 i + 3) q^{34} - 4 i q^{36} + 2 q^{37} + ( - i + 1) q^{38} + 6 q^{39} + 7 q^{41} + (2 i - 2) q^{42} - 4 q^{43} + 10 q^{44} + (4 i - 4) q^{46} + 2 i q^{47} - 4 q^{48} + 3 q^{49} - 3 i q^{51} + 12 i q^{52} - 4 q^{53} + ( - 5 i - 5) q^{54} + ( - 4 i - 4) q^{56} - i q^{57} + ( - 6 i + 6) q^{58} + 4 i q^{59} + 10 i q^{61} + ( - 8 i - 8) q^{62} - 4 i q^{63} - 8 i q^{64} + ( - 5 i + 5) q^{66} - 3 q^{67} + 6 q^{68} + 4 i q^{69} + 2 q^{71} + ( - 4 i + 4) q^{72} - i q^{73} + (2 i + 2) q^{74} + 2 q^{76} + 10 q^{77} + (6 i + 6) q^{78} - 10 q^{79} + q^{81} + (7 i + 7) q^{82} - 9 q^{83} - 4 q^{84} + ( - 4 i - 4) q^{86} - 6 i q^{87} + (10 i + 10) q^{88} - 5 q^{89} + 12 i q^{91} - 8 q^{92} - 8 q^{93} + (2 i - 2) q^{94} + ( - 4 i - 4) q^{96} + 2 i q^{97} + (3 i + 3) q^{98} + 10 i q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 2 q^{2} + 2 q^{3} + 2 q^{6} - 4 q^{8} - 4 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 2 q^{2} + 2 q^{3} + 2 q^{6} - 4 q^{8} - 4 q^{9} + 12 q^{13} - 4 q^{14} - 8 q^{16} - 4 q^{18} + 10 q^{22} - 4 q^{24} + 12 q^{26} - 10 q^{27} - 8 q^{28} - 16 q^{31} - 8 q^{32} + 6 q^{34} + 4 q^{37} + 2 q^{38} + 12 q^{39} + 14 q^{41} - 4 q^{42} - 8 q^{43} + 20 q^{44} - 8 q^{46} - 8 q^{48} + 6 q^{49} - 8 q^{53} - 10 q^{54} - 8 q^{56} + 12 q^{58} - 16 q^{62} + 10 q^{66} - 6 q^{67} + 12 q^{68} + 4 q^{71} + 8 q^{72} + 4 q^{74} + 4 q^{76} + 20 q^{77} + 12 q^{78} - 20 q^{79} + 2 q^{81} + 14 q^{82} - 18 q^{83} - 8 q^{84} - 8 q^{86} + 20 q^{88} - 10 q^{89} - 16 q^{92} - 16 q^{93} - 4 q^{94} - 8 q^{96} + 6 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/200\mathbb{Z}\right)^\times\).

\(n\) \(101\) \(151\) \(177\)
\(\chi(n)\) \(-1\) \(1\) \(-1\)

Embeddings

For each embedding \(\iota_m\) of the coefficient field, the values \(\iota_m(a_n)\) are shown below.

For more information on an embedded modular form you can click on its label.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
149.1
1.00000i
1.00000i
1.00000 1.00000i 1.00000 2.00000i 0 1.00000 1.00000i 2.00000i −2.00000 2.00000i −2.00000 0
149.2 1.00000 + 1.00000i 1.00000 2.00000i 0 1.00000 + 1.00000i 2.00000i −2.00000 + 2.00000i −2.00000 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
40.f even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 200.2.f.b 2
3.b odd 2 1 1800.2.d.d 2
4.b odd 2 1 800.2.f.a 2
5.b even 2 1 200.2.f.a 2
5.c odd 4 1 200.2.d.a 2
5.c odd 4 1 200.2.d.d yes 2
8.b even 2 1 200.2.f.a 2
8.d odd 2 1 800.2.f.b 2
12.b even 2 1 7200.2.d.j 2
15.d odd 2 1 1800.2.d.f 2
15.e even 4 1 1800.2.k.b 2
15.e even 4 1 1800.2.k.h 2
20.d odd 2 1 800.2.f.b 2
20.e even 4 1 800.2.d.b 2
20.e even 4 1 800.2.d.c 2
24.f even 2 1 7200.2.d.c 2
24.h odd 2 1 1800.2.d.f 2
40.e odd 2 1 800.2.f.a 2
40.f even 2 1 inner 200.2.f.b 2
40.i odd 4 1 200.2.d.a 2
40.i odd 4 1 200.2.d.d yes 2
40.k even 4 1 800.2.d.b 2
40.k even 4 1 800.2.d.c 2
60.h even 2 1 7200.2.d.c 2
60.l odd 4 1 7200.2.k.e 2
60.l odd 4 1 7200.2.k.g 2
80.i odd 4 1 6400.2.a.d 1
80.i odd 4 1 6400.2.a.g 1
80.j even 4 1 6400.2.a.e 1
80.j even 4 1 6400.2.a.f 1
80.s even 4 1 6400.2.a.r 1
80.s even 4 1 6400.2.a.u 1
80.t odd 4 1 6400.2.a.s 1
80.t odd 4 1 6400.2.a.t 1
120.i odd 2 1 1800.2.d.d 2
120.m even 2 1 7200.2.d.j 2
120.q odd 4 1 7200.2.k.e 2
120.q odd 4 1 7200.2.k.g 2
120.w even 4 1 1800.2.k.b 2
120.w even 4 1 1800.2.k.h 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
200.2.d.a 2 5.c odd 4 1
200.2.d.a 2 40.i odd 4 1
200.2.d.d yes 2 5.c odd 4 1
200.2.d.d yes 2 40.i odd 4 1
200.2.f.a 2 5.b even 2 1
200.2.f.a 2 8.b even 2 1
200.2.f.b 2 1.a even 1 1 trivial
200.2.f.b 2 40.f even 2 1 inner
800.2.d.b 2 20.e even 4 1
800.2.d.b 2 40.k even 4 1
800.2.d.c 2 20.e even 4 1
800.2.d.c 2 40.k even 4 1
800.2.f.a 2 4.b odd 2 1
800.2.f.a 2 40.e odd 2 1
800.2.f.b 2 8.d odd 2 1
800.2.f.b 2 20.d odd 2 1
1800.2.d.d 2 3.b odd 2 1
1800.2.d.d 2 120.i odd 2 1
1800.2.d.f 2 15.d odd 2 1
1800.2.d.f 2 24.h odd 2 1
1800.2.k.b 2 15.e even 4 1
1800.2.k.b 2 120.w even 4 1
1800.2.k.h 2 15.e even 4 1
1800.2.k.h 2 120.w even 4 1
6400.2.a.d 1 80.i odd 4 1
6400.2.a.e 1 80.j even 4 1
6400.2.a.f 1 80.j even 4 1
6400.2.a.g 1 80.i odd 4 1
6400.2.a.r 1 80.s even 4 1
6400.2.a.s 1 80.t odd 4 1
6400.2.a.t 1 80.t odd 4 1
6400.2.a.u 1 80.s even 4 1
7200.2.d.c 2 24.f even 2 1
7200.2.d.c 2 60.h even 2 1
7200.2.d.j 2 12.b even 2 1
7200.2.d.j 2 120.m even 2 1
7200.2.k.e 2 60.l odd 4 1
7200.2.k.e 2 120.q odd 4 1
7200.2.k.g 2 60.l odd 4 1
7200.2.k.g 2 120.q odd 4 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3} - 1 \) acting on \(S_{2}^{\mathrm{new}}(200, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} - 2T + 2 \) Copy content Toggle raw display
$3$ \( (T - 1)^{2} \) Copy content Toggle raw display
$5$ \( T^{2} \) Copy content Toggle raw display
$7$ \( T^{2} + 4 \) Copy content Toggle raw display
$11$ \( T^{2} + 25 \) Copy content Toggle raw display
$13$ \( (T - 6)^{2} \) Copy content Toggle raw display
$17$ \( T^{2} + 9 \) Copy content Toggle raw display
$19$ \( T^{2} + 1 \) Copy content Toggle raw display
$23$ \( T^{2} + 16 \) Copy content Toggle raw display
$29$ \( T^{2} + 36 \) Copy content Toggle raw display
$31$ \( (T + 8)^{2} \) Copy content Toggle raw display
$37$ \( (T - 2)^{2} \) Copy content Toggle raw display
$41$ \( (T - 7)^{2} \) Copy content Toggle raw display
$43$ \( (T + 4)^{2} \) Copy content Toggle raw display
$47$ \( T^{2} + 4 \) Copy content Toggle raw display
$53$ \( (T + 4)^{2} \) Copy content Toggle raw display
$59$ \( T^{2} + 16 \) Copy content Toggle raw display
$61$ \( T^{2} + 100 \) Copy content Toggle raw display
$67$ \( (T + 3)^{2} \) Copy content Toggle raw display
$71$ \( (T - 2)^{2} \) Copy content Toggle raw display
$73$ \( T^{2} + 1 \) Copy content Toggle raw display
$79$ \( (T + 10)^{2} \) Copy content Toggle raw display
$83$ \( (T + 9)^{2} \) Copy content Toggle raw display
$89$ \( (T + 5)^{2} \) Copy content Toggle raw display
$97$ \( T^{2} + 4 \) Copy content Toggle raw display
show more
show less